I am seeing more and more women who are completely surprised at the notion that they could be larger than a D. "I'm not that big!" While that is partly remedied by remembering that D is not a bra size, I think there is another adjustment that needs to be made.

Typically, there are only about 5 cup sizes that are available.

A: tiny

B: fairly normal

C: perfect

D: big

DD: huge

anything bigger: ginormous

However, this is just untrue. That only covers up to 5" difference between bust and underbust. In reality, there is a lot more variation. My proposed system:

AA - D: small

DD - GG: medium

H - K: large

My hope is that women realize that having an F cup does not make them huge. There are a lot more sizes out there, and F is just in the middle.